Axial Skeleton Development

Question 1

The axial skeleton is composed of

Answer 1

The cranium (skull), vertebral colmn, ribs, and sternum.

Question 2

During the 4th week, cells in the ____ surround the nueral tube (primordium spinal cord) and the notochord, the structure around which the primordia of the vertebrae develop

Answer 2

sclerotomes

Question 3

Mesodermal cells from ____ migrate to condense:

around the notochord to form ___

Centrum forms _____

Around the neural tube to form _____

Vertebral arches form ___,____,___ and ______processes

Answer 3

Question 4

Ossification of typical vertebrae begins during the ____ week and ends by the ____ year

in the body wall to form ____processes

Answer 4

7th, 25th

Costal

Question 5

Costal processes form___

The ribs become _____ during the embryonic period and ossify during fetal development

Answer 5

ribs

cartliginous

Question 6

As mesodermal cells migrate from _____ toward neural tube, they split into a ___ and ____ portion

Answer 6

sclerotome, cranial, caudal

Question 7

Answer 7

Question 8

Answer 8

Question 9

Answer 9